Water-pump



and

UNITED STATES PATENT OFFICE.

EDWARD C.-NEWCOMB. OF SCITUATE. MASSACHUSETTS. ASSIGNOR TO STANDARD ENGINEERING COMPANY, OF ST. LOUIS. MISSOURI, A CORPORATION.

WATER-PUMP.

Specification of Letters Patent.

Patented Apr. 6, 1920.

To all whom it may concern Be it known that T, EDWARD C. Nnwoonn,

a c tizen of the United States, residing in the town of Scituate, county of Plymouth, and State of Massachusetts, have invented new and useful Improvements in \Vater- Pumps, of which the following is a specification.

' This invention relates to pumps, and has for its general object to provide a novel constrl'iction of water pump the barrels of which are relatively long as com )ared with their diameter and in which tie use of stalling boxes for the pump pistons is dispensed with.

i The invention has for its special objects to mount the pump barrels in such manner that they can be readily placed in true alinement with each other and will have no tendency to be moved out of alinement when once secured in position; to provide novel means for collecting and draining oil water which may seep or be forced. in the operation of the pump. between the wall of the pump and the piston; and to provide certain novel details of construction combinations and arrangements of parts, whereby a water pump of great utility and eiliciency is provided.

My improved pump is illustrated in the accompanying drawing in which the figure is a View partlyin side elevation and partly in section of a" pump constructed according to my; invention.

Referrin r to the drawing the numeral 1 indicates t e pump frame, which. is in the form of a hollow open'sided casting having heads 2, 3, respectively. at opposite ends, and a base 4. The. pump as a whole is mounted in a casing 5 adapted toconta-in oil, and the base 4 of the pump frame is bolted to the bottom 6 of this casing, as indicated at 7. Each of the heads 2, 3, is

provided witha cylindrical aperture 8, each aperture being surrounded on its outer side by a plurality of screw-threaded openings 9. The numerals 1O, 11 indicate, respectively, two pump barrels, which are secured in endwise relation on the heads of the inserted therein. The purpose of this construction is to permit of the movement of either pump barrel to adjust its bore into exact alinement with the other pump barrel. Ench flange 12 is provide with a series of apertures 13 designed to aline with the screw-threaded openings 9, and through which apertures screw-threaded bolts are passed and screwed into the openingsd) for bolting each barrel to its respective head 2, 3. The apertures 13 are of slightly greater diameter than the dianuter of the bolts so as to permitof the slight movement of the barrel and flange, in adjusting it in its a1? ing: position with'the other barrel. After being positioned the bolts 14 are screwed. home. and the helids of the bolts 14 engaging the outer face of the flange 12 will bind the latter, in each case, in firm engagement with the eorrespondingi; head of the pump frame. as will. be Iunderstood. If desired suitable keys or wedgesmay be inserted between the shank of the bolt M and the bore of the opening 13.. land betweenithe pump barrel and the wall of the aperture 8, in each instance, to more securely hold the pump barrel in its adjusted position. But as provisions of such means are obvious and within the skill of an ordinary mechanic, they are not illustrated, particularly as they would ordinarily not be required. At their outer ends each of the barre s i0 and 11 is provided with a valve chamber 14, in which is located, an inlet valve 16, governing the inlet from a water supply pipe 17, and an outlet valve 18, controlling an outlet 19. The 'water supply pipe 17 extends through the bottom 6 of the casing 5, and where it passes through a shilling-box 20 is secured to the ug ier side of said ottom, the I V stufiing-box being to pre. cape of oil from the casing-*5. The pipe '17 is not in an manner secured, or fixed to, the bottom so that in the event of relative movement between the dpump barrel and 'the casing the pipe coul move in its bearing in said bottom. The purpose. of this arrangement is to prevent any tendency to force either of the map barrels out of its true alinement with the other barrel, which might occur if a rigid-connection were made between the pipe 17 and the hott'intif the casing 5.

Toaccomplish the ob ect of draining from the pump barrels any water which may seep or be formed between the piston and the bore ofthe pump barrel, I provide on the interior of each barrel'an annular 21, communicating with the bore of. I arrel, and secure in a screw-threaded opening, communicating with said groove, a pipe 22,

which also extends through the bottom 6 5 and passes wrought stumn -box 23, the

pipe 22 being movable in sai stufiing-box or the same purpose as described in connection with the 1pc 17. The pipe 22 may communicate wit the suction side ofthe 50 pump, or the water escaping through the same may be permitted to drop on the ground.

' While the annular grooye 21 may be located at anygareferred point in the ion h each pump barrel, I have conside it desirable to-locate the same in the inner end ,portion 25 of the pump barrel which proects into the aperture 8. Each of the heads 2, 3, will, therefore, be rovided with an opening extending throng the base of the frame 1 to permit the pipe 22 to be passed up through said opening and secured in the um barrel.

The numeral 2&indicat's' the double-actpiston, which isn the form of 'ns extending fi ,ment with, e res" j 0 pump barrels. a the p the frame ,Lis across-head it Kill is connected to remind pitman rod 2B byifieans. of across-pin 29,,the pitman rod s anning the frame- 1-; as will underst The inner end 8011f said pitman rod is connected to a crank pin 81 upon an eccentric 32 secured on a drive a cylindrical rod, its and port into and "havi While the invention is, of course-amt limited to size proportions or exact details of construction, it may be stated that each of 'caping into 'in t e respective pump barrels,

annular flanges seated against said -bolts securing said flanges to said heads,

This size of pump is intended for use in steam automobiles to pump water to the boiler; but it is obvious that the same pri ciple could be employed in pumps of larg size and for other purposes.

It will be noted that each of the pump barrels is wholly supported b being connected at its inner end to t e respective heads 2, 3 and said barrels being of considerable len th as compared with their diameter, an the piston rod having conserpllently such a long hearing within each of t e pum barrels, there is ver little tendency o the two barrels wor ing out of alinement, as it will be observed that they are in effect held in alinement by the piston rod itself. The pum as a whole being supported by means of t e base 4 on the bottom 0 mg 6, and there being no other xed connection between the pump barrels and said casing, it is obvious that any movement of the casing will effect the pump as a whole, and there will be no force exerted on one barrel which will not equally affect the other barrel.

By providing the annular groove 21 with the escape pip? 22 I prevent an water est e casing 5, whic as stated contains oil arfd thus dispense with the necessityoffemploying stufling=boxes for the piston.

While I have showii and described the pistons for the pumps as consisting of a sin le rod, the opposite ends of whic work it is obvious that I can employ separate rods and connect them at the center to the cross-head, in a well known way.

I claim 1. A duplex pump comprising a frame, alining pump barrels'afiugtably secured at their inner endtto sai rame and being thereby wholly supported and a unitary piston common to said-barrels 1 2. A duplex pump comprisin a hollow frame, alining pump barrels admstably secured at their inner ends to'o'pposite ends of said frame and-being thereby wholly suprted, a unitary p'ston common tosaid arrela-and a driving'connection for said piston secured thereto intermediate the ends of the frame.

'8. A duplex pumlpoomprisinga frame, alining pump barre s adjustably secured at their inner ends-to o posite ends ofsaid frame and being there ry wholly su ported and aunitar piston common to said rrels.

4. A dup ex pump comprising a frame )rovided at opposite ends with apertured ieads, alining pump barrels having inner end portions lm selyseated in the respective apertures and provided, respectivelyhwith.

eads

loosely received in apertures in said flanges, tion thereof and supply pipes communieat- 10 and eunitary piston rod having opposite ing with said barrels and passing loosely end portions workingin said pump barrel. through a wall of said casing to permit 5. A diilex pump comprising a frame, relative movement between the casing and elongated 'alining pump barrels secured at pump barrels without thereby causing said their inner ends to said frame and being pipes to exert pressure upon said barrels. 15 thereby wholly supported, a piston common In testimony whereof, I have hereunto set to said barrels, a casing inclosing said pump my hand. and adapted to contain oil for the iuloriea- EDWARD C. NEVVCOMB. 

